“Cloudbleed” vulnerability exposed millions of pieces of personal information to the Internet. The vulnerability was the result of using a parsing built on Ragel not developed in-house by CloudFlare Inc. Bill Curtis is reluctant to criticize the software developers at Cloudflare for the incident that became known as Cloudbleed. “There are things that are humanly possible in terms of testing and detection, and then there are things that are just so far out there, they can happen””]
Source: https://www.darkreading.com/cloudbleed-lessons-what-if-theres-no-lesson/a/d-id/733041